Icons changing with new build

[parade]

I use a template with
img src="/~img##" to display build-in icons.

When there is a new build of HFS the icons are changing.
Is there any way to avoid this other than take external icon-sources?

Greetings
parade

[TSG]

src="/~img_file"
src="/~img_folder"
src="/~img_link"
src="/~img_lock"

In the respective template sections.